2 * Copyright (c) 2010, 2011, 2012, 2013 Nicira, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 #include "ofp-parse.h"
26 #include "byte-order.h"
27 #include "dynamic-string.h"
29 #include "meta-flow.h"
30 #include "multipath.h"
33 #include "ofp-actions.h"
36 #include "openflow/openflow.h"
37 #include "ovs-thread.h"
40 #include "socket-util.h"
43 /* Parses 'str' as an 8-bit unsigned integer into '*valuep'.
45 * 'name' describes the value parsed in an error message, if any.
47 * Returns NULL if successful, otherwise a malloc()'d string describing the
48 * error. The caller is responsible for freeing the returned string. */
49 static char * WARN_UNUSED_RESULT
50 str_to_u8(const char *str
, const char *name
, uint8_t *valuep
)
54 if (!str_to_int(str
, 0, &value
) || value
< 0 || value
> 255) {
55 return xasprintf("invalid %s \"%s\"", name
, str
);
61 /* Parses 'str' as a 16-bit unsigned integer into '*valuep'.
63 * 'name' describes the value parsed in an error message, if any.
65 * Returns NULL if successful, otherwise a malloc()'d string describing the
66 * error. The caller is responsible for freeing the returned string. */
67 static char * WARN_UNUSED_RESULT
68 str_to_u16(const char *str
, const char *name
, uint16_t *valuep
)
72 if (!str_to_int(str
, 0, &value
) || value
< 0 || value
> 65535) {
73 return xasprintf("invalid %s \"%s\"", name
, str
);
79 /* Parses 'str' as a 32-bit unsigned integer into '*valuep'.
81 * Returns NULL if successful, otherwise a malloc()'d string describing the
82 * error. The caller is responsible for freeing the returned string. */
83 static char * WARN_UNUSED_RESULT
84 str_to_u32(const char *str
, uint32_t *valuep
)
90 return xstrdup("missing required numeric argument");
94 value
= strtoul(str
, &tail
, 0);
95 if (errno
== EINVAL
|| errno
== ERANGE
|| *tail
) {
96 return xasprintf("invalid numeric format %s", str
);
102 /* Parses 'str' as an 64-bit unsigned integer into '*valuep'.
104 * Returns NULL if successful, otherwise a malloc()'d string describing the
105 * error. The caller is responsible for freeing the returned string. */
106 static char * WARN_UNUSED_RESULT
107 str_to_u64(const char *str
, uint64_t *valuep
)
113 return xstrdup("missing required numeric argument");
117 value
= strtoull(str
, &tail
, 0);
118 if (errno
== EINVAL
|| errno
== ERANGE
|| *tail
) {
119 return xasprintf("invalid numeric format %s", str
);
125 /* Parses 'str' as an 64-bit unsigned integer in network byte order into
128 * Returns NULL if successful, otherwise a malloc()'d string describing the
129 * error. The caller is responsible for freeing the returned string. */
130 static char * WARN_UNUSED_RESULT
131 str_to_be64(const char *str
, ovs_be64
*valuep
)
136 error
= str_to_u64(str
, &value
);
138 *valuep
= htonll(value
);
143 /* Parses 'str' as an Ethernet address into 'mac'.
145 * Returns NULL if successful, otherwise a malloc()'d string describing the
146 * error. The caller is responsible for freeing the returned string. */
147 static char * WARN_UNUSED_RESULT
148 str_to_mac(const char *str
, uint8_t mac
[6])
150 if (!ovs_scan(str
, ETH_ADDR_SCAN_FMT
, ETH_ADDR_SCAN_ARGS(mac
))) {
151 return xasprintf("invalid mac address %s", str
);
156 /* Parses 'str' as an IP address into '*ip'.
158 * Returns NULL if successful, otherwise a malloc()'d string describing the
159 * error. The caller is responsible for freeing the returned string. */
160 static char * WARN_UNUSED_RESULT
161 str_to_ip(const char *str
, ovs_be32
*ip
)
163 struct in_addr in_addr
;
165 if (lookup_ip(str
, &in_addr
)) {
166 return xasprintf("%s: could not convert to IP address", str
);
168 *ip
= in_addr
.s_addr
;
172 /* Parses 'arg' as the argument to an "enqueue" action, and appends such an
173 * action to 'ofpacts'.
175 * Returns NULL if successful, otherwise a malloc()'d string describing the
176 * error. The caller is responsible for freeing the returned string. */
177 static char * WARN_UNUSED_RESULT
178 parse_enqueue(char *arg
, struct ofpbuf
*ofpacts
)
181 char *port
= strtok_r(arg
, ":q,", &sp
);
182 char *queue
= strtok_r(NULL
, "", &sp
);
183 struct ofpact_enqueue
*enqueue
;
185 if (port
== NULL
|| queue
== NULL
) {
186 return xstrdup("\"enqueue\" syntax is \"enqueue:PORT:QUEUE\" or "
187 "\"enqueue(PORT,QUEUE)\"");
190 enqueue
= ofpact_put_ENQUEUE(ofpacts
);
191 if (!ofputil_port_from_string(port
, &enqueue
->port
)) {
192 return xasprintf("%s: enqueue to unknown port", port
);
194 return str_to_u32(queue
, &enqueue
->queue
);
197 /* Parses 'arg' as the argument to an "output" action, and appends such an
198 * action to 'ofpacts'.
200 * Returns NULL if successful, otherwise a malloc()'d string describing the
201 * error. The caller is responsible for freeing the returned string. */
202 static char * WARN_UNUSED_RESULT
203 parse_output(const char *arg
, struct ofpbuf
*ofpacts
)
205 if (strchr(arg
, '[')) {
206 struct ofpact_output_reg
*output_reg
;
208 output_reg
= ofpact_put_OUTPUT_REG(ofpacts
);
209 output_reg
->max_len
= UINT16_MAX
;
210 return mf_parse_subfield(&output_reg
->src
, arg
);
212 struct ofpact_output
*output
;
214 output
= ofpact_put_OUTPUT(ofpacts
);
215 output
->max_len
= output
->port
== OFPP_CONTROLLER
? UINT16_MAX
: 0;
216 if (!ofputil_port_from_string(arg
, &output
->port
)) {
217 return xasprintf("%s: output to unknown port", arg
);
223 /* Parses 'arg' as the argument to an "resubmit" action, and appends such an
224 * action to 'ofpacts'.
226 * Returns NULL if successful, otherwise a malloc()'d string describing the
227 * error. The caller is responsible for freeing the returned string. */
228 static char * WARN_UNUSED_RESULT
229 parse_resubmit(char *arg
, struct ofpbuf
*ofpacts
)
231 struct ofpact_resubmit
*resubmit
;
232 char *in_port_s
, *table_s
;
234 resubmit
= ofpact_put_RESUBMIT(ofpacts
);
236 in_port_s
= strsep(&arg
, ",");
237 if (in_port_s
&& in_port_s
[0]) {
238 if (!ofputil_port_from_string(in_port_s
, &resubmit
->in_port
)) {
239 return xasprintf("%s: resubmit to unknown port", in_port_s
);
242 resubmit
->in_port
= OFPP_IN_PORT
;
245 table_s
= strsep(&arg
, ",");
246 if (table_s
&& table_s
[0]) {
247 uint32_t table_id
= 0;
250 error
= str_to_u32(table_s
, &table_id
);
254 resubmit
->table_id
= table_id
;
256 resubmit
->table_id
= 255;
259 if (resubmit
->in_port
== OFPP_IN_PORT
&& resubmit
->table_id
== 255) {
260 return xstrdup("at least one \"in_port\" or \"table\" must be "
261 "specified on resubmit");
266 /* Parses 'arg' as the argument to a "note" action, and appends such an action
269 * Returns NULL if successful, otherwise a malloc()'d string describing the
270 * error. The caller is responsible for freeing the returned string. */
271 static char * WARN_UNUSED_RESULT
272 parse_note(const char *arg
, struct ofpbuf
*ofpacts
)
274 struct ofpact_note
*note
;
276 note
= ofpact_put_NOTE(ofpacts
);
277 while (*arg
!= '\0') {
288 byte
= hexits_value(arg
, 2, &ok
);
290 return xstrdup("bad hex digit in `note' argument");
292 ofpbuf_put(ofpacts
, &byte
, 1);
299 ofpact_update_len(ofpacts
, ¬e
->ofpact
);
303 /* Parses 'arg' as the argument to a "fin_timeout" action, and appends such an
304 * action to 'ofpacts'.
306 * Returns NULL if successful, otherwise a malloc()'d string describing the
307 * error. The caller is responsible for freeing the returned string. */
308 static char * WARN_UNUSED_RESULT
309 parse_fin_timeout(struct ofpbuf
*b
, char *arg
)
311 struct ofpact_fin_timeout
*oft
= ofpact_put_FIN_TIMEOUT(b
);
314 while (ofputil_parse_key_value(&arg
, &key
, &value
)) {
317 if (!strcmp(key
, "idle_timeout")) {
318 error
= str_to_u16(value
, key
, &oft
->fin_idle_timeout
);
319 } else if (!strcmp(key
, "hard_timeout")) {
320 error
= str_to_u16(value
, key
, &oft
->fin_hard_timeout
);
322 error
= xasprintf("invalid key '%s' in 'fin_timeout' argument",
333 /* Parses 'arg' as the argument to a "controller" action, and appends such an
334 * action to 'ofpacts'.
336 * Returns NULL if successful, otherwise a malloc()'d string describing the
337 * error. The caller is responsible for freeing the returned string. */
338 static char * WARN_UNUSED_RESULT
339 parse_controller(struct ofpbuf
*b
, char *arg
)
341 enum ofp_packet_in_reason reason
= OFPR_ACTION
;
342 uint16_t controller_id
= 0;
343 uint16_t max_len
= UINT16_MAX
;
347 } else if (strspn(arg
, "0123456789") == strlen(arg
)) {
348 char *error
= str_to_u16(arg
, "max_len", &max_len
);
355 while (ofputil_parse_key_value(&arg
, &name
, &value
)) {
356 if (!strcmp(name
, "reason")) {
357 if (!ofputil_packet_in_reason_from_string(value
, &reason
)) {
358 return xasprintf("unknown reason \"%s\"", value
);
360 } else if (!strcmp(name
, "max_len")) {
361 char *error
= str_to_u16(value
, "max_len", &max_len
);
365 } else if (!strcmp(name
, "id")) {
366 char *error
= str_to_u16(value
, "id", &controller_id
);
371 return xasprintf("unknown key \"%s\" parsing controller "
377 if (reason
== OFPR_ACTION
&& controller_id
== 0) {
378 struct ofpact_output
*output
;
380 output
= ofpact_put_OUTPUT(b
);
381 output
->port
= OFPP_CONTROLLER
;
382 output
->max_len
= max_len
;
384 struct ofpact_controller
*controller
;
386 controller
= ofpact_put_CONTROLLER(b
);
387 controller
->max_len
= max_len
;
388 controller
->reason
= reason
;
389 controller
->controller_id
= controller_id
;
396 parse_noargs_dec_ttl(struct ofpbuf
*b
)
398 struct ofpact_cnt_ids
*ids
;
401 ids
= ofpact_put_DEC_TTL(b
);
402 ofpbuf_put(b
, &id
, sizeof id
);
404 ids
->n_controllers
++;
405 ofpact_update_len(b
, &ids
->ofpact
);
408 /* Parses 'arg' as the argument to a "dec_ttl" action, and appends such an
409 * action to 'ofpacts'.
411 * Returns NULL if successful, otherwise a malloc()'d string describing the
412 * error. The caller is responsible for freeing the returned string. */
413 static char * WARN_UNUSED_RESULT
414 parse_dec_ttl(struct ofpbuf
*b
, char *arg
)
417 parse_noargs_dec_ttl(b
);
419 struct ofpact_cnt_ids
*ids
;
422 ids
= ofpact_put_DEC_TTL(b
);
423 ids
->ofpact
.compat
= OFPUTIL_NXAST_DEC_TTL_CNT_IDS
;
424 for (cntr
= strtok_r(arg
, ", ", &arg
); cntr
!= NULL
;
425 cntr
= strtok_r(NULL
, ", ", &arg
)) {
426 uint16_t id
= atoi(cntr
);
428 ofpbuf_put(b
, &id
, sizeof id
);
430 ids
->n_controllers
++;
432 if (!ids
->n_controllers
) {
433 return xstrdup("dec_ttl_cnt_ids: expected at least one controller "
436 ofpact_update_len(b
, &ids
->ofpact
);
441 /* Parses 'arg' as the argument to a "set_mpls_label" action, and appends such
444 * Returns NULL if successful, otherwise a malloc()'d string describing the
445 * error. The caller is responsible for freeing the returned string. */
446 static char * WARN_UNUSED_RESULT
447 parse_set_mpls_label(struct ofpbuf
*b
, const char *arg
)
449 struct ofpact_mpls_label
*mpls_label
= ofpact_put_SET_MPLS_LABEL(b
);
452 return xstrdup("parse_set_mpls_label: expected label.");
455 mpls_label
->label
= htonl(atoi(arg
));
459 /* Parses 'arg' as the argument to a "set_mpls_tc" action, and appends such an
462 * Returns NULL if successful, otherwise a malloc()'d string describing the
463 * error. The caller is responsible for freeing the returned string. */
464 static char * WARN_UNUSED_RESULT
465 parse_set_mpls_tc(struct ofpbuf
*b
, const char *arg
)
467 struct ofpact_mpls_tc
*mpls_tc
= ofpact_put_SET_MPLS_TC(b
);
470 return xstrdup("parse_set_mpls_tc: expected tc.");
473 mpls_tc
->tc
= atoi(arg
);
477 /* Parses 'arg' as the argument to a "set_mpls_ttl" action, and appends such an
478 * action to 'ofpacts'.
480 * Returns NULL if successful, otherwise a malloc()'d string describing the
481 * error. The caller is responsible for freeing the returned string. */
482 static char * WARN_UNUSED_RESULT
483 parse_set_mpls_ttl(struct ofpbuf
*b
, const char *arg
)
485 struct ofpact_mpls_ttl
*mpls_ttl
= ofpact_put_SET_MPLS_TTL(b
);
488 return xstrdup("parse_set_mpls_ttl: expected ttl.");
491 mpls_ttl
->ttl
= atoi(arg
);
495 /* Parses a "set_field" action with argument 'arg', appending the parsed
496 * action to 'ofpacts'.
498 * Returns NULL if successful, otherwise a malloc()'d string describing the
499 * error. The caller is responsible for freeing the returned string. */
500 static char * WARN_UNUSED_RESULT
501 set_field_parse__(char *arg
, struct ofpbuf
*ofpacts
,
502 enum ofputil_protocol
*usable_protocols
)
504 struct ofpact_set_field
*sf
= ofpact_put_SET_FIELD(ofpacts
);
508 const struct mf_field
*mf
;
512 delim
= strstr(arg
, "->");
514 return xasprintf("%s: missing `->'", arg
);
516 if (strlen(delim
) <= strlen("->")) {
517 return xasprintf("%s: missing field name following `->'", arg
);
520 key
= delim
+ strlen("->");
521 mf
= mf_from_name(key
);
523 return xasprintf("%s is not a valid OXM field name", key
);
526 return xasprintf("%s is read-only", key
);
530 error
= mf_parse_value(mf
, value
, &sf
->value
);
535 if (!mf_is_value_valid(mf
, &sf
->value
)) {
536 return xasprintf("%s is not a valid value for field %s", value
, key
);
539 *usable_protocols
&= mf
->usable_protocols
;
543 /* Parses 'arg' as the argument to a "set_field" action, and appends such an
544 * action to 'ofpacts'.
546 * Returns NULL if successful, otherwise a malloc()'d string describing the
547 * error. The caller is responsible for freeing the returned string. */
548 static char * WARN_UNUSED_RESULT
549 set_field_parse(const char *arg
, struct ofpbuf
*ofpacts
,
550 enum ofputil_protocol
*usable_protocols
)
552 char *copy
= xstrdup(arg
);
553 char *error
= set_field_parse__(copy
, ofpacts
, usable_protocols
);
558 /* Parses 'arg' as the argument to a "write_metadata" instruction, and appends
559 * such an action to 'ofpacts'.
561 * Returns NULL if successful, otherwise a malloc()'d string describing the
562 * error. The caller is responsible for freeing the returned string. */
563 static char * WARN_UNUSED_RESULT
564 parse_metadata(struct ofpbuf
*b
, char *arg
)
566 struct ofpact_metadata
*om
;
567 char *mask
= strchr(arg
, '/');
569 om
= ofpact_put_WRITE_METADATA(b
);
575 error
= str_to_be64(mask
+ 1, &om
->mask
);
580 om
->mask
= OVS_BE64_MAX
;
583 return str_to_be64(arg
, &om
->metadata
);
586 /* Parses 'arg' as the argument to a "sample" action, and appends such an
587 * action to 'ofpacts'.
589 * Returns NULL if successful, otherwise a malloc()'d string describing the
590 * error. The caller is responsible for freeing the returned string. */
591 static char * WARN_UNUSED_RESULT
592 parse_sample(struct ofpbuf
*b
, char *arg
)
594 struct ofpact_sample
*os
= ofpact_put_SAMPLE(b
);
597 while (ofputil_parse_key_value(&arg
, &key
, &value
)) {
600 if (!strcmp(key
, "probability")) {
601 error
= str_to_u16(value
, "probability", &os
->probability
);
602 if (!error
&& os
->probability
== 0) {
603 error
= xasprintf("invalid probability value \"%s\"", value
);
605 } else if (!strcmp(key
, "collector_set_id")) {
606 error
= str_to_u32(value
, &os
->collector_set_id
);
607 } else if (!strcmp(key
, "obs_domain_id")) {
608 error
= str_to_u32(value
, &os
->obs_domain_id
);
609 } else if (!strcmp(key
, "obs_point_id")) {
610 error
= str_to_u32(value
, &os
->obs_point_id
);
612 error
= xasprintf("invalid key \"%s\" in \"sample\" argument",
619 if (os
->probability
== 0) {
620 return xstrdup("non-zero \"probability\" must be specified on sample");
625 /* Parses 'arg' as the argument to action 'code', and appends such an action to
628 * Returns NULL if successful, otherwise a malloc()'d string describing the
629 * error. The caller is responsible for freeing the returned string. */
630 static char * WARN_UNUSED_RESULT
631 parse_named_action(enum ofputil_action_code code
,
632 char *arg
, struct ofpbuf
*ofpacts
,
633 enum ofputil_protocol
*usable_protocols
)
635 size_t orig_size
= ofpacts
->size
;
636 struct ofpact_tunnel
*tunnel
;
637 struct ofpact_vlan_vid
*vlan_vid
;
638 struct ofpact_vlan_pcp
*vlan_pcp
;
640 uint16_t ethertype
= 0;
642 uint8_t tos
= 0, ecn
, ttl
;
646 case OFPUTIL_ACTION_INVALID
:
649 case OFPUTIL_OFPAT10_OUTPUT
:
650 case OFPUTIL_OFPAT11_OUTPUT
:
651 error
= parse_output(arg
, ofpacts
);
654 case OFPUTIL_OFPAT10_SET_VLAN_VID
:
655 case OFPUTIL_OFPAT11_SET_VLAN_VID
:
656 error
= str_to_u16(arg
, "VLAN VID", &vid
);
661 if (vid
& ~VLAN_VID_MASK
) {
662 return xasprintf("%s: not a valid VLAN VID", arg
);
664 vlan_vid
= ofpact_put_SET_VLAN_VID(ofpacts
);
665 vlan_vid
->vlan_vid
= vid
;
666 vlan_vid
->ofpact
.compat
= code
;
667 vlan_vid
->push_vlan_if_needed
= code
== OFPUTIL_OFPAT10_SET_VLAN_VID
;
670 case OFPUTIL_OFPAT10_SET_VLAN_PCP
:
671 case OFPUTIL_OFPAT11_SET_VLAN_PCP
:
672 error
= str_to_u8(arg
, "VLAN PCP", &pcp
);
678 return xasprintf("%s: not a valid VLAN PCP", arg
);
680 vlan_pcp
= ofpact_put_SET_VLAN_PCP(ofpacts
);
681 vlan_pcp
->vlan_pcp
= pcp
;
682 vlan_pcp
->ofpact
.compat
= code
;
683 vlan_pcp
->push_vlan_if_needed
= code
== OFPUTIL_OFPAT10_SET_VLAN_PCP
;
686 case OFPUTIL_OFPAT12_SET_FIELD
:
687 return set_field_parse(arg
, ofpacts
, usable_protocols
);
689 case OFPUTIL_OFPAT10_STRIP_VLAN
:
690 case OFPUTIL_OFPAT11_POP_VLAN
:
691 ofpact_put_STRIP_VLAN(ofpacts
)->ofpact
.compat
= code
;
694 case OFPUTIL_OFPAT11_PUSH_VLAN
:
695 *usable_protocols
&= OFPUTIL_P_OF11_UP
;
696 error
= str_to_u16(arg
, "ethertype", ðertype
);
701 if (ethertype
!= ETH_TYPE_VLAN_8021Q
) {
702 /* XXX ETH_TYPE_VLAN_8021AD case isn't supported */
703 return xasprintf("%s: not a valid VLAN ethertype", arg
);
706 ofpact_put_PUSH_VLAN(ofpacts
);
709 case OFPUTIL_OFPAT11_SET_QUEUE
:
710 error
= str_to_u32(arg
, &ofpact_put_SET_QUEUE(ofpacts
)->queue_id
);
713 case OFPUTIL_OFPAT10_SET_DL_SRC
:
714 case OFPUTIL_OFPAT11_SET_DL_SRC
:
715 error
= str_to_mac(arg
, ofpact_put_SET_ETH_SRC(ofpacts
)->mac
);
718 case OFPUTIL_OFPAT10_SET_DL_DST
:
719 case OFPUTIL_OFPAT11_SET_DL_DST
:
720 error
= str_to_mac(arg
, ofpact_put_SET_ETH_DST(ofpacts
)->mac
);
723 case OFPUTIL_OFPAT10_SET_NW_SRC
:
724 case OFPUTIL_OFPAT11_SET_NW_SRC
:
725 error
= str_to_ip(arg
, &ofpact_put_SET_IPV4_SRC(ofpacts
)->ipv4
);
728 case OFPUTIL_OFPAT10_SET_NW_DST
:
729 case OFPUTIL_OFPAT11_SET_NW_DST
:
730 error
= str_to_ip(arg
, &ofpact_put_SET_IPV4_DST(ofpacts
)->ipv4
);
733 case OFPUTIL_OFPAT10_SET_NW_TOS
:
734 case OFPUTIL_OFPAT11_SET_NW_TOS
:
735 error
= str_to_u8(arg
, "TOS", &tos
);
740 if (tos
& ~IP_DSCP_MASK
) {
741 return xasprintf("%s: not a valid TOS", arg
);
743 ofpact_put_SET_IP_DSCP(ofpacts
)->dscp
= tos
;
746 case OFPUTIL_OFPAT11_SET_NW_ECN
:
747 error
= str_to_u8(arg
, "ECN", &ecn
);
752 if (ecn
& ~IP_ECN_MASK
) {
753 return xasprintf("%s: not a valid ECN", arg
);
755 ofpact_put_SET_IP_ECN(ofpacts
)->ecn
= ecn
;
758 case OFPUTIL_OFPAT11_SET_NW_TTL
:
759 error
= str_to_u8(arg
, "TTL", &ttl
);
764 ofpact_put_SET_IP_TTL(ofpacts
)->ttl
= ttl
;
767 case OFPUTIL_OFPAT11_DEC_NW_TTL
:
770 case OFPUTIL_OFPAT10_SET_TP_SRC
:
771 case OFPUTIL_OFPAT11_SET_TP_SRC
:
772 error
= str_to_u16(arg
, "source port",
773 &ofpact_put_SET_L4_SRC_PORT(ofpacts
)->port
);
776 case OFPUTIL_OFPAT10_SET_TP_DST
:
777 case OFPUTIL_OFPAT11_SET_TP_DST
:
778 error
= str_to_u16(arg
, "destination port",
779 &ofpact_put_SET_L4_DST_PORT(ofpacts
)->port
);
782 case OFPUTIL_OFPAT10_ENQUEUE
:
783 error
= parse_enqueue(arg
, ofpacts
);
786 case OFPUTIL_NXAST_RESUBMIT
:
787 error
= parse_resubmit(arg
, ofpacts
);
790 case OFPUTIL_NXAST_SET_TUNNEL
:
791 case OFPUTIL_NXAST_SET_TUNNEL64
:
792 tunnel
= ofpact_put_SET_TUNNEL(ofpacts
);
793 tunnel
->ofpact
.compat
= code
;
794 error
= str_to_u64(arg
, &tunnel
->tun_id
);
797 case OFPUTIL_NXAST_WRITE_METADATA
:
798 error
= parse_metadata(ofpacts
, arg
);
801 case OFPUTIL_NXAST_SET_QUEUE
:
802 error
= str_to_u32(arg
, &ofpact_put_SET_QUEUE(ofpacts
)->queue_id
);
805 case OFPUTIL_NXAST_POP_QUEUE
:
806 ofpact_put_POP_QUEUE(ofpacts
);
809 case OFPUTIL_NXAST_REG_MOVE
:
810 error
= nxm_parse_reg_move(ofpact_put_REG_MOVE(ofpacts
), arg
);
813 case OFPUTIL_NXAST_REG_LOAD
:
814 error
= nxm_parse_reg_load(ofpact_put_REG_LOAD(ofpacts
), arg
);
817 case OFPUTIL_NXAST_NOTE
:
818 error
= parse_note(arg
, ofpacts
);
821 case OFPUTIL_NXAST_MULTIPATH
:
822 error
= multipath_parse(ofpact_put_MULTIPATH(ofpacts
), arg
);
825 case OFPUTIL_NXAST_BUNDLE
:
826 error
= bundle_parse(arg
, ofpacts
);
829 case OFPUTIL_NXAST_BUNDLE_LOAD
:
830 error
= bundle_parse_load(arg
, ofpacts
);
833 case OFPUTIL_NXAST_RESUBMIT_TABLE
:
834 case OFPUTIL_NXAST_OUTPUT_REG
:
835 case OFPUTIL_NXAST_DEC_TTL_CNT_IDS
:
838 case OFPUTIL_NXAST_LEARN
:
839 error
= learn_parse(arg
, ofpacts
);
842 case OFPUTIL_NXAST_EXIT
:
843 ofpact_put_EXIT(ofpacts
);
846 case OFPUTIL_NXAST_DEC_TTL
:
847 error
= parse_dec_ttl(ofpacts
, arg
);
850 case OFPUTIL_NXAST_SET_MPLS_LABEL
:
851 case OFPUTIL_OFPAT11_SET_MPLS_LABEL
:
852 error
= parse_set_mpls_label(ofpacts
, arg
);
855 case OFPUTIL_NXAST_SET_MPLS_TC
:
856 case OFPUTIL_OFPAT11_SET_MPLS_TC
:
857 error
= parse_set_mpls_tc(ofpacts
, arg
);
860 case OFPUTIL_NXAST_SET_MPLS_TTL
:
861 case OFPUTIL_OFPAT11_SET_MPLS_TTL
:
862 error
= parse_set_mpls_ttl(ofpacts
, arg
);
865 case OFPUTIL_OFPAT11_DEC_MPLS_TTL
:
866 case OFPUTIL_NXAST_DEC_MPLS_TTL
:
867 ofpact_put_DEC_MPLS_TTL(ofpacts
);
870 case OFPUTIL_NXAST_FIN_TIMEOUT
:
871 error
= parse_fin_timeout(ofpacts
, arg
);
874 case OFPUTIL_NXAST_CONTROLLER
:
875 error
= parse_controller(ofpacts
, arg
);
878 case OFPUTIL_OFPAT11_PUSH_MPLS
:
879 case OFPUTIL_NXAST_PUSH_MPLS
:
880 error
= str_to_u16(arg
, "push_mpls", ðertype
);
882 ofpact_put_PUSH_MPLS(ofpacts
)->ethertype
= htons(ethertype
);
886 case OFPUTIL_OFPAT11_POP_MPLS
:
887 case OFPUTIL_NXAST_POP_MPLS
:
888 error
= str_to_u16(arg
, "pop_mpls", ðertype
);
890 ofpact_put_POP_MPLS(ofpacts
)->ethertype
= htons(ethertype
);
894 case OFPUTIL_OFPAT11_GROUP
:
895 error
= str_to_u32(arg
, &ofpact_put_GROUP(ofpacts
)->group_id
);
898 case OFPUTIL_NXAST_STACK_PUSH
:
899 error
= nxm_parse_stack_action(ofpact_put_STACK_PUSH(ofpacts
), arg
);
901 case OFPUTIL_NXAST_STACK_POP
:
902 error
= nxm_parse_stack_action(ofpact_put_STACK_POP(ofpacts
), arg
);
905 case OFPUTIL_NXAST_SAMPLE
:
906 error
= parse_sample(ofpacts
, arg
);
911 ofpacts
->size
= orig_size
;
916 /* Parses action 'act', with argument 'arg', and appends a parsed version to
919 * 'n_actions' specifies the number of actions already parsed (for proper
920 * handling of "drop" actions).
922 * Returns NULL if successful, otherwise a malloc()'d string describing the
923 * error. The caller is responsible for freeing the returned string. */
924 static char * WARN_UNUSED_RESULT
925 str_to_ofpact__(char *pos
, char *act
, char *arg
,
926 struct ofpbuf
*ofpacts
, int n_actions
,
927 enum ofputil_protocol
*usable_protocols
)
929 int code
= ofputil_action_code_from_name(act
);
931 return parse_named_action(code
, arg
, ofpacts
, usable_protocols
);
932 } else if (!strcasecmp(act
, "drop")) {
934 return xstrdup("Drop actions must not be preceded by other "
936 } else if (ofputil_parse_key_value(&pos
, &act
, &arg
)) {
937 return xstrdup("Drop actions must not be followed by other "
942 if (ofputil_port_from_string(act
, &port
)) {
943 ofpact_put_OUTPUT(ofpacts
)->port
= port
;
945 return xasprintf("Unknown action: %s", act
);
952 /* Parses 'str' as a series of actions, and appends them to 'ofpacts'.
954 * Returns NULL if successful, otherwise a malloc()'d string describing the
955 * error. The caller is responsible for freeing the returned string. */
956 static char * WARN_UNUSED_RESULT
957 str_to_ofpacts__(char *str
, struct ofpbuf
*ofpacts
,
958 enum ofputil_protocol
*usable_protocols
)
960 size_t orig_size
= ofpacts
->size
;
961 char *pos
, *act
, *arg
;
966 while (ofputil_parse_key_value(&pos
, &act
, &arg
)) {
967 char *error
= str_to_ofpact__(pos
, act
, arg
, ofpacts
, n_actions
,
970 ofpacts
->size
= orig_size
;
981 /* Parses 'str' as a series of actions, and appends them to 'ofpacts'.
983 * Returns NULL if successful, otherwise a malloc()'d string describing the
984 * error. The caller is responsible for freeing the returned string. */
985 static char * WARN_UNUSED_RESULT
986 str_to_ofpacts(char *str
, struct ofpbuf
*ofpacts
,
987 enum ofputil_protocol
*usable_protocols
)
989 size_t orig_size
= ofpacts
->size
;
993 error_s
= str_to_ofpacts__(str
, ofpacts
, usable_protocols
);
998 error
= ofpacts_verify(ofpacts
->data
, ofpacts
->size
);
1000 ofpacts
->size
= orig_size
;
1001 return xstrdup("Incorrect action ordering");
1007 /* Parses 'arg' as the argument to instruction 'type', and appends such an
1008 * instruction to 'ofpacts'.
1010 * Returns NULL if successful, otherwise a malloc()'d string describing the
1011 * error. The caller is responsible for freeing the returned string. */
1012 static char * WARN_UNUSED_RESULT
1013 parse_named_instruction(enum ovs_instruction_type type
,
1014 char *arg
, struct ofpbuf
*ofpacts
,
1015 enum ofputil_protocol
*usable_protocols
)
1017 char *error_s
= NULL
;
1020 *usable_protocols
&= OFPUTIL_P_OF11_UP
;
1023 case OVSINST_OFPIT11_APPLY_ACTIONS
:
1024 NOT_REACHED(); /* This case is handled by str_to_inst_ofpacts() */
1027 case OVSINST_OFPIT11_WRITE_ACTIONS
: {
1028 struct ofpact_nest
*on
;
1031 ofpact_pad(ofpacts
);
1032 ofs
= ofpacts
->size
;
1033 on
= ofpact_put(ofpacts
, OFPACT_WRITE_ACTIONS
,
1034 offsetof(struct ofpact_nest
, actions
));
1035 error_s
= str_to_ofpacts__(arg
, ofpacts
, usable_protocols
);
1037 on
= ofpbuf_at_assert(ofpacts
, ofs
, sizeof *on
);
1038 on
->ofpact
.len
= ofpacts
->size
- ofs
;
1041 ofpacts
->size
= ofs
;
1046 case OVSINST_OFPIT11_CLEAR_ACTIONS
:
1047 ofpact_put_CLEAR_ACTIONS(ofpacts
);
1050 case OVSINST_OFPIT13_METER
:
1051 *usable_protocols
&= OFPUTIL_P_OF13_UP
;
1052 error_s
= str_to_u32(arg
, &ofpact_put_METER(ofpacts
)->meter_id
);
1055 case OVSINST_OFPIT11_WRITE_METADATA
:
1056 *usable_protocols
&= OFPUTIL_P_NXM_OF11_UP
;
1057 error_s
= parse_metadata(ofpacts
, arg
);
1060 case OVSINST_OFPIT11_GOTO_TABLE
: {
1061 struct ofpact_goto_table
*ogt
= ofpact_put_GOTO_TABLE(ofpacts
);
1062 char *table_s
= strsep(&arg
, ",");
1063 if (!table_s
|| !table_s
[0]) {
1064 return xstrdup("instruction goto-table needs table id");
1066 error_s
= str_to_u8(table_s
, "table", &ogt
->table_id
);
1075 /* If write_metadata is specified as an action AND an instruction, ofpacts
1076 could be invalid. */
1077 error
= ofpacts_verify(ofpacts
->data
, ofpacts
->size
);
1079 return xstrdup("Incorrect instruction ordering");
1084 /* Parses 'str' as a series of instructions, and appends them to 'ofpacts'.
1086 * Returns NULL if successful, otherwise a malloc()'d string describing the
1087 * error. The caller is responsible for freeing the returned string. */
1088 static char * WARN_UNUSED_RESULT
1089 str_to_inst_ofpacts(char *str
, struct ofpbuf
*ofpacts
,
1090 enum ofputil_protocol
*usable_protocols
)
1092 size_t orig_size
= ofpacts
->size
;
1093 char *pos
, *inst
, *arg
;
1095 const char *prev_inst
= NULL
;
1100 while (ofputil_parse_key_value(&pos
, &inst
, &arg
)) {
1101 type
= ovs_instruction_type_from_name(inst
);
1103 char *error
= str_to_ofpact__(pos
, inst
, arg
, ofpacts
, n_actions
,
1106 ofpacts
->size
= orig_size
;
1110 type
= OVSINST_OFPIT11_APPLY_ACTIONS
;
1111 if (prev_type
== type
) {
1115 } else if (type
== OVSINST_OFPIT11_APPLY_ACTIONS
) {
1116 ofpacts
->size
= orig_size
;
1117 return xasprintf("%s isn't supported. Just write actions then "
1118 "it is interpreted as apply_actions", inst
);
1120 char *error
= parse_named_instruction(type
, arg
, ofpacts
,
1123 ofpacts
->size
= orig_size
;
1128 if (type
<= prev_type
) {
1129 ofpacts
->size
= orig_size
;
1130 if (type
== prev_type
) {
1131 return xasprintf("instruction %s may be specified only once",
1134 return xasprintf("instruction %s must be specified before %s",
1143 ofpact_pad(ofpacts
);
1155 parse_protocol(const char *name
, const struct protocol
**p_out
)
1157 static const struct protocol protocols
[] = {
1158 { "ip", ETH_TYPE_IP
, 0 },
1159 { "arp", ETH_TYPE_ARP
, 0 },
1160 { "icmp", ETH_TYPE_IP
, IPPROTO_ICMP
},
1161 { "tcp", ETH_TYPE_IP
, IPPROTO_TCP
},
1162 { "udp", ETH_TYPE_IP
, IPPROTO_UDP
},
1163 { "sctp", ETH_TYPE_IP
, IPPROTO_SCTP
},
1164 { "ipv6", ETH_TYPE_IPV6
, 0 },
1165 { "ip6", ETH_TYPE_IPV6
, 0 },
1166 { "icmp6", ETH_TYPE_IPV6
, IPPROTO_ICMPV6
},
1167 { "tcp6", ETH_TYPE_IPV6
, IPPROTO_TCP
},
1168 { "udp6", ETH_TYPE_IPV6
, IPPROTO_UDP
},
1169 { "sctp6", ETH_TYPE_IPV6
, IPPROTO_SCTP
},
1170 { "rarp", ETH_TYPE_RARP
, 0},
1171 { "mpls", ETH_TYPE_MPLS
, 0 },
1172 { "mplsm", ETH_TYPE_MPLS_MCAST
, 0 },
1174 const struct protocol
*p
;
1176 for (p
= protocols
; p
< &protocols
[ARRAY_SIZE(protocols
)]; p
++) {
1177 if (!strcmp(p
->name
, name
)) {
1186 /* Parses 's' as the (possibly masked) value of field 'mf', and updates
1187 * 'match' appropriately. Restricts the set of usable protocols to ones
1188 * supporting the parsed field.
1190 * Returns NULL if successful, otherwise a malloc()'d string describing the
1191 * error. The caller is responsible for freeing the returned string. */
1192 static char * WARN_UNUSED_RESULT
1193 parse_field(const struct mf_field
*mf
, const char *s
, struct match
*match
,
1194 enum ofputil_protocol
*usable_protocols
)
1196 union mf_value value
, mask
;
1199 error
= mf_parse(mf
, s
, &value
, &mask
);
1201 *usable_protocols
&= mf_set(mf
, &value
, &mask
, match
);
1206 static char * WARN_UNUSED_RESULT
1207 parse_ofp_str__(struct ofputil_flow_mod
*fm
, int command
, char *string
,
1208 enum ofputil_protocol
*usable_protocols
)
1211 F_OUT_PORT
= 1 << 0,
1214 F_PRIORITY
= 1 << 4,
1217 char *save_ptr
= NULL
;
1218 char *act_str
= NULL
;
1221 *usable_protocols
= OFPUTIL_P_ANY
;
1225 fields
= F_OUT_PORT
;
1229 fields
= F_ACTIONS
| F_TIMEOUT
| F_PRIORITY
| F_FLAGS
;
1233 fields
= F_OUT_PORT
;
1236 case OFPFC_DELETE_STRICT
:
1237 fields
= F_OUT_PORT
| F_PRIORITY
;
1241 fields
= F_ACTIONS
| F_TIMEOUT
| F_PRIORITY
| F_FLAGS
;
1244 case OFPFC_MODIFY_STRICT
:
1245 fields
= F_ACTIONS
| F_TIMEOUT
| F_PRIORITY
| F_FLAGS
;
1252 match_init_catchall(&fm
->match
);
1253 fm
->priority
= OFP_DEFAULT_PRIORITY
;
1254 fm
->cookie
= htonll(0);
1255 fm
->cookie_mask
= htonll(0);
1256 if (command
== OFPFC_MODIFY
|| command
== OFPFC_MODIFY_STRICT
) {
1257 /* For modify, by default, don't update the cookie. */
1258 fm
->new_cookie
= OVS_BE64_MAX
;
1260 fm
->new_cookie
= htonll(0);
1262 fm
->modify_cookie
= false;
1263 fm
->table_id
= 0xff;
1264 fm
->command
= command
;
1265 fm
->idle_timeout
= OFP_FLOW_PERMANENT
;
1266 fm
->hard_timeout
= OFP_FLOW_PERMANENT
;
1267 fm
->buffer_id
= UINT32_MAX
;
1268 fm
->out_port
= OFPP_ANY
;
1270 fm
->out_group
= OFPG11_ANY
;
1271 if (fields
& F_ACTIONS
) {
1272 act_str
= strstr(string
, "action");
1274 return xstrdup("must specify an action");
1278 act_str
= strchr(act_str
+ 1, '=');
1280 return xstrdup("must specify an action");
1285 for (name
= strtok_r(string
, "=, \t\r\n", &save_ptr
); name
;
1286 name
= strtok_r(NULL
, "=, \t\r\n", &save_ptr
)) {
1287 const struct protocol
*p
;
1290 if (parse_protocol(name
, &p
)) {
1291 match_set_dl_type(&fm
->match
, htons(p
->dl_type
));
1293 match_set_nw_proto(&fm
->match
, p
->nw_proto
);
1295 } else if (fields
& F_FLAGS
&& !strcmp(name
, "send_flow_rem")) {
1296 fm
->flags
|= OFPUTIL_FF_SEND_FLOW_REM
;
1297 } else if (fields
& F_FLAGS
&& !strcmp(name
, "check_overlap")) {
1298 fm
->flags
|= OFPUTIL_FF_CHECK_OVERLAP
;
1299 } else if (fields
& F_FLAGS
&& !strcmp(name
, "reset_counts")) {
1300 fm
->flags
|= OFPUTIL_FF_RESET_COUNTS
;
1301 *usable_protocols
&= OFPUTIL_P_OF12_UP
;
1302 } else if (fields
& F_FLAGS
&& !strcmp(name
, "no_packet_counts")) {
1303 fm
->flags
|= OFPUTIL_FF_NO_PKT_COUNTS
;
1304 *usable_protocols
&= OFPUTIL_P_OF13_UP
;
1305 } else if (fields
& F_FLAGS
&& !strcmp(name
, "no_byte_counts")) {
1306 fm
->flags
|= OFPUTIL_FF_NO_BYT_COUNTS
;
1307 *usable_protocols
&= OFPUTIL_P_OF13_UP
;
1311 value
= strtok_r(NULL
, ", \t\r\n", &save_ptr
);
1313 return xasprintf("field %s missing value", name
);
1316 if (!strcmp(name
, "table")) {
1317 error
= str_to_u8(value
, "table", &fm
->table_id
);
1318 if (fm
->table_id
!= 0xff) {
1319 *usable_protocols
&= OFPUTIL_P_TID
;
1321 } else if (!strcmp(name
, "out_port")) {
1322 if (!ofputil_port_from_string(value
, &fm
->out_port
)) {
1323 error
= xasprintf("%s is not a valid OpenFlow port",
1326 } else if (fields
& F_PRIORITY
&& !strcmp(name
, "priority")) {
1327 uint16_t priority
= 0;
1329 error
= str_to_u16(value
, name
, &priority
);
1330 fm
->priority
= priority
;
1331 } else if (fields
& F_TIMEOUT
&& !strcmp(name
, "idle_timeout")) {
1332 error
= str_to_u16(value
, name
, &fm
->idle_timeout
);
1333 } else if (fields
& F_TIMEOUT
&& !strcmp(name
, "hard_timeout")) {
1334 error
= str_to_u16(value
, name
, &fm
->hard_timeout
);
1335 } else if (!strcmp(name
, "cookie")) {
1336 char *mask
= strchr(value
, '/');
1339 /* A mask means we're searching for a cookie. */
1340 if (command
== OFPFC_ADD
) {
1341 return xstrdup("flow additions cannot use "
1345 error
= str_to_be64(value
, &fm
->cookie
);
1349 error
= str_to_be64(mask
+ 1, &fm
->cookie_mask
);
1351 /* Matching of the cookie is only supported through NXM or
1353 if (fm
->cookie_mask
!= htonll(0)) {
1354 *usable_protocols
&= OFPUTIL_P_NXM_OF11_UP
;
1357 /* No mask means that the cookie is being set. */
1358 if (command
!= OFPFC_ADD
&& command
!= OFPFC_MODIFY
1359 && command
!= OFPFC_MODIFY_STRICT
) {
1360 return xstrdup("cannot set cookie");
1362 error
= str_to_be64(value
, &fm
->new_cookie
);
1363 fm
->modify_cookie
= true;
1365 } else if (mf_from_name(name
)) {
1366 error
= parse_field(mf_from_name(name
), value
, &fm
->match
,
1368 } else if (!strcmp(name
, "duration")
1369 || !strcmp(name
, "n_packets")
1370 || !strcmp(name
, "n_bytes")
1371 || !strcmp(name
, "idle_age")
1372 || !strcmp(name
, "hard_age")) {
1373 /* Ignore these, so that users can feed the output of
1374 * "ovs-ofctl dump-flows" back into commands that parse
1377 error
= xasprintf("unknown keyword %s", name
);
1385 /* Check for usable protocol interdependencies between match fields. */
1386 if (fm
->match
.flow
.dl_type
== htons(ETH_TYPE_IPV6
)) {
1387 const struct flow_wildcards
*wc
= &fm
->match
.wc
;
1388 /* Only NXM and OXM support matching L3 and L4 fields within IPv6.
1390 * (IPv6 specific fields as well as arp_sha, arp_tha, nw_frag, and
1391 * nw_ttl are covered elsewhere so they don't need to be included in
1394 if (wc
->masks
.nw_proto
|| wc
->masks
.nw_tos
1395 || wc
->masks
.tp_src
|| wc
->masks
.tp_dst
) {
1396 *usable_protocols
&= OFPUTIL_P_NXM_OXM_ANY
;
1399 if (!fm
->cookie_mask
&& fm
->new_cookie
== OVS_BE64_MAX
1400 && (command
== OFPFC_MODIFY
|| command
== OFPFC_MODIFY_STRICT
)) {
1401 /* On modifies without a mask, we are supposed to add a flow if
1402 * one does not exist. If a cookie wasn't been specified, use a
1403 * default of zero. */
1404 fm
->new_cookie
= htonll(0);
1406 if (fields
& F_ACTIONS
) {
1407 struct ofpbuf ofpacts
;
1410 ofpbuf_init(&ofpacts
, 32);
1411 error
= str_to_inst_ofpacts(act_str
, &ofpacts
, usable_protocols
);
1415 err
= ofpacts_check(ofpacts
.data
, ofpacts
.size
, &fm
->match
.flow
,
1416 OFPP_MAX
, fm
->table_id
, 255, usable_protocols
);
1417 if (!err
&& !usable_protocols
) {
1418 err
= OFPERR_OFPBAC_MATCH_INCONSISTENT
;
1421 error
= xasprintf("actions are invalid with specified match "
1422 "(%s)", ofperr_to_string(err
));
1427 ofpbuf_uninit(&ofpacts
);
1431 fm
->ofpacts_len
= ofpacts
.size
;
1432 fm
->ofpacts
= ofpbuf_steal_data(&ofpacts
);
1434 fm
->ofpacts_len
= 0;
1441 /* Convert 'str_' (as described in the Flow Syntax section of the ovs-ofctl man
1442 * page) into 'fm' for sending the specified flow_mod 'command' to a switch.
1443 * Returns the set of usable protocols in '*usable_protocols'.
1445 * To parse syntax for an OFPT_FLOW_MOD (or NXT_FLOW_MOD), use an OFPFC_*
1446 * constant for 'command'. To parse syntax for an OFPST_FLOW or
1447 * OFPST_AGGREGATE (or NXST_FLOW or NXST_AGGREGATE), use -1 for 'command'.
1449 * Returns NULL if successful, otherwise a malloc()'d string describing the
1450 * error. The caller is responsible for freeing the returned string. */
1451 char * WARN_UNUSED_RESULT
1452 parse_ofp_str(struct ofputil_flow_mod
*fm
, int command
, const char *str_
,
1453 enum ofputil_protocol
*usable_protocols
)
1455 char *string
= xstrdup(str_
);
1458 error
= parse_ofp_str__(fm
, command
, string
, usable_protocols
);
1461 fm
->ofpacts_len
= 0;
1468 static char * WARN_UNUSED_RESULT
1469 parse_ofp_meter_mod_str__(struct ofputil_meter_mod
*mm
, char *string
,
1470 struct ofpbuf
*bands
, int command
,
1471 enum ofputil_protocol
*usable_protocols
)
1478 char *save_ptr
= NULL
;
1479 char *band_str
= NULL
;
1482 /* Meters require at least OF 1.3. */
1483 *usable_protocols
= OFPUTIL_P_OF13_UP
;
1491 fields
= F_METER
| F_FLAGS
| F_BANDS
;
1494 case OFPMC13_DELETE
:
1498 case OFPMC13_MODIFY
:
1499 fields
= F_METER
| F_FLAGS
| F_BANDS
;
1506 mm
->command
= command
;
1507 mm
->meter
.meter_id
= 0;
1508 mm
->meter
.flags
= 0;
1509 if (fields
& F_BANDS
) {
1510 band_str
= strstr(string
, "band");
1512 return xstrdup("must specify bands");
1516 band_str
= strchr(band_str
+ 1, '=');
1518 return xstrdup("must specify bands");
1523 for (name
= strtok_r(string
, "=, \t\r\n", &save_ptr
); name
;
1524 name
= strtok_r(NULL
, "=, \t\r\n", &save_ptr
)) {
1526 if (fields
& F_FLAGS
&& !strcmp(name
, "kbps")) {
1527 mm
->meter
.flags
|= OFPMF13_KBPS
;
1528 } else if (fields
& F_FLAGS
&& !strcmp(name
, "pktps")) {
1529 mm
->meter
.flags
|= OFPMF13_PKTPS
;
1530 } else if (fields
& F_FLAGS
&& !strcmp(name
, "burst")) {
1531 mm
->meter
.flags
|= OFPMF13_BURST
;
1532 } else if (fields
& F_FLAGS
&& !strcmp(name
, "stats")) {
1533 mm
->meter
.flags
|= OFPMF13_STATS
;
1537 value
= strtok_r(NULL
, ", \t\r\n", &save_ptr
);
1539 return xasprintf("field %s missing value", name
);
1542 if (!strcmp(name
, "meter")) {
1543 if (!strcmp(value
, "all")) {
1544 mm
->meter
.meter_id
= OFPM13_ALL
;
1545 } else if (!strcmp(value
, "controller")) {
1546 mm
->meter
.meter_id
= OFPM13_CONTROLLER
;
1547 } else if (!strcmp(value
, "slowpath")) {
1548 mm
->meter
.meter_id
= OFPM13_SLOWPATH
;
1550 char *error
= str_to_u32(value
, &mm
->meter
.meter_id
);
1554 if (mm
->meter
.meter_id
> OFPM13_MAX
) {
1555 return xasprintf("invalid value for %s", name
);
1559 return xasprintf("unknown keyword %s", name
);
1563 if (fields
& F_METER
&& !mm
->meter
.meter_id
) {
1564 return xstrdup("must specify 'meter'");
1566 if (fields
& F_FLAGS
&& !mm
->meter
.flags
) {
1567 return xstrdup("meter must specify either 'kbps' or 'pktps'");
1570 if (fields
& F_BANDS
) {
1571 uint16_t n_bands
= 0;
1572 struct ofputil_meter_band
*band
= NULL
;
1575 for (name
= strtok_r(band_str
, "=, \t\r\n", &save_ptr
); name
;
1576 name
= strtok_r(NULL
, "=, \t\r\n", &save_ptr
)) {
1580 value
= strtok_r(NULL
, ", \t\r\n", &save_ptr
);
1582 return xasprintf("field %s missing value", name
);
1585 if (!strcmp(name
, "type")) {
1586 /* Start a new band */
1587 band
= ofpbuf_put_zeros(bands
, sizeof *band
);
1590 if (!strcmp(value
, "drop")) {
1591 band
->type
= OFPMBT13_DROP
;
1592 } else if (!strcmp(value
, "dscp_remark")) {
1593 band
->type
= OFPMBT13_DSCP_REMARK
;
1595 return xasprintf("field %s unknown value %s", name
, value
);
1597 } else if (!band
|| !band
->type
) {
1598 return xstrdup("band must start with the 'type' keyword");
1599 } else if (!strcmp(name
, "rate")) {
1600 char *error
= str_to_u32(value
, &band
->rate
);
1604 } else if (!strcmp(name
, "burst_size")) {
1605 char *error
= str_to_u32(value
, &band
->burst_size
);
1609 } else if (!strcmp(name
, "prec_level")) {
1610 char *error
= str_to_u8(value
, name
, &band
->prec_level
);
1615 return xasprintf("unknown keyword %s", name
);
1618 /* validate bands */
1620 return xstrdup("meter must have bands");
1623 mm
->meter
.n_bands
= n_bands
;
1624 mm
->meter
.bands
= ofpbuf_steal_data(bands
);
1626 for (i
= 0; i
< n_bands
; ++i
) {
1627 band
= &mm
->meter
.bands
[i
];
1630 return xstrdup("band must have 'type'");
1632 if (band
->type
== OFPMBT13_DSCP_REMARK
) {
1633 if (!band
->prec_level
) {
1634 return xstrdup("'dscp_remark' band must have"
1638 if (band
->prec_level
) {
1639 return xstrdup("Only 'dscp_remark' band may have"
1644 return xstrdup("band must have 'rate'");
1646 if (mm
->meter
.flags
& OFPMF13_BURST
) {
1647 if (!band
->burst_size
) {
1648 return xstrdup("band must have 'burst_size' "
1649 "when 'burst' flag is set");
1652 if (band
->burst_size
) {
1653 return xstrdup("band may have 'burst_size' only "
1654 "when 'burst' flag is set");
1659 mm
->meter
.n_bands
= 0;
1660 mm
->meter
.bands
= NULL
;
1666 /* Convert 'str_' (as described in the Flow Syntax section of the ovs-ofctl man
1667 * page) into 'mm' for sending the specified meter_mod 'command' to a switch.
1669 * Returns NULL if successful, otherwise a malloc()'d string describing the
1670 * error. The caller is responsible for freeing the returned string. */
1671 char * WARN_UNUSED_RESULT
1672 parse_ofp_meter_mod_str(struct ofputil_meter_mod
*mm
, const char *str_
,
1673 int command
, enum ofputil_protocol
*usable_protocols
)
1675 struct ofpbuf bands
;
1679 ofpbuf_init(&bands
, 64);
1680 string
= xstrdup(str_
);
1682 error
= parse_ofp_meter_mod_str__(mm
, string
, &bands
, command
,
1686 ofpbuf_uninit(&bands
);
1691 static char * WARN_UNUSED_RESULT
1692 parse_flow_monitor_request__(struct ofputil_flow_monitor_request
*fmr
,
1693 const char *str_
, char *string
,
1694 enum ofputil_protocol
*usable_protocols
)
1696 static atomic_uint32_t id
= ATOMIC_VAR_INIT(0);
1697 char *save_ptr
= NULL
;
1700 atomic_add(&id
, 1, &fmr
->id
);
1702 fmr
->flags
= (NXFMF_INITIAL
| NXFMF_ADD
| NXFMF_DELETE
| NXFMF_MODIFY
1703 | NXFMF_OWN
| NXFMF_ACTIONS
);
1704 fmr
->out_port
= OFPP_NONE
;
1705 fmr
->table_id
= 0xff;
1706 match_init_catchall(&fmr
->match
);
1708 for (name
= strtok_r(string
, "=, \t\r\n", &save_ptr
); name
;
1709 name
= strtok_r(NULL
, "=, \t\r\n", &save_ptr
)) {
1710 const struct protocol
*p
;
1712 if (!strcmp(name
, "!initial")) {
1713 fmr
->flags
&= ~NXFMF_INITIAL
;
1714 } else if (!strcmp(name
, "!add")) {
1715 fmr
->flags
&= ~NXFMF_ADD
;
1716 } else if (!strcmp(name
, "!delete")) {
1717 fmr
->flags
&= ~NXFMF_DELETE
;
1718 } else if (!strcmp(name
, "!modify")) {
1719 fmr
->flags
&= ~NXFMF_MODIFY
;
1720 } else if (!strcmp(name
, "!actions")) {
1721 fmr
->flags
&= ~NXFMF_ACTIONS
;
1722 } else if (!strcmp(name
, "!own")) {
1723 fmr
->flags
&= ~NXFMF_OWN
;
1724 } else if (parse_protocol(name
, &p
)) {
1725 match_set_dl_type(&fmr
->match
, htons(p
->dl_type
));
1727 match_set_nw_proto(&fmr
->match
, p
->nw_proto
);
1732 value
= strtok_r(NULL
, ", \t\r\n", &save_ptr
);
1734 return xasprintf("%s: field %s missing value", str_
, name
);
1737 if (!strcmp(name
, "table")) {
1738 char *error
= str_to_u8(value
, "table", &fmr
->table_id
);
1742 } else if (!strcmp(name
, "out_port")) {
1743 fmr
->out_port
= u16_to_ofp(atoi(value
));
1744 } else if (mf_from_name(name
)) {
1747 error
= parse_field(mf_from_name(name
), value
, &fmr
->match
,
1753 return xasprintf("%s: unknown keyword %s", str_
, name
);
1760 /* Convert 'str_' (as described in the documentation for the "monitor" command
1761 * in the ovs-ofctl man page) into 'fmr'.
1763 * Returns NULL if successful, otherwise a malloc()'d string describing the
1764 * error. The caller is responsible for freeing the returned string. */
1765 char * WARN_UNUSED_RESULT
1766 parse_flow_monitor_request(struct ofputil_flow_monitor_request
*fmr
,
1768 enum ofputil_protocol
*usable_protocols
)
1770 char *string
= xstrdup(str_
);
1771 char *error
= parse_flow_monitor_request__(fmr
, str_
, string
,
1777 /* Parses 's' as a set of OpenFlow actions and appends the actions to
1780 * Returns NULL if successful, otherwise a malloc()'d string describing the
1781 * error. The caller is responsible for freeing the returned string. */
1782 char * WARN_UNUSED_RESULT
1783 parse_ofpacts(const char *s_
, struct ofpbuf
*ofpacts
,
1784 enum ofputil_protocol
*usable_protocols
)
1786 char *s
= xstrdup(s_
);
1789 *usable_protocols
= OFPUTIL_P_ANY
;
1791 error
= str_to_ofpacts(s
, ofpacts
, usable_protocols
);
1797 /* Parses 'string' as an OFPT_FLOW_MOD or NXT_FLOW_MOD with command 'command'
1798 * (one of OFPFC_*) into 'fm'.
1800 * Returns NULL if successful, otherwise a malloc()'d string describing the
1801 * error. The caller is responsible for freeing the returned string. */
1802 char * WARN_UNUSED_RESULT
1803 parse_ofp_flow_mod_str(struct ofputil_flow_mod
*fm
, const char *string
,
1805 enum ofputil_protocol
*usable_protocols
)
1807 char *error
= parse_ofp_str(fm
, command
, string
, usable_protocols
);
1809 /* Normalize a copy of the match. This ensures that non-normalized
1810 * flows get logged but doesn't affect what gets sent to the switch, so
1811 * that the switch can do whatever it likes with the flow. */
1812 struct match match_copy
= fm
->match
;
1813 ofputil_normalize_match(&match_copy
);
1819 /* Convert 'table_id' and 'flow_miss_handling' (as described for the
1820 * "mod-table" command in the ovs-ofctl man page) into 'tm' for sending the
1821 * specified table_mod 'command' to a switch.
1823 * Returns NULL if successful, otherwise a malloc()'d string describing the
1824 * error. The caller is responsible for freeing the returned string. */
1825 char * WARN_UNUSED_RESULT
1826 parse_ofp_table_mod(struct ofputil_table_mod
*tm
, const char *table_id
,
1827 const char *flow_miss_handling
,
1828 enum ofputil_protocol
*usable_protocols
)
1830 /* Table mod requires at least OF 1.1. */
1831 *usable_protocols
= OFPUTIL_P_OF11_UP
;
1833 if (!strcasecmp(table_id
, "all")) {
1834 tm
->table_id
= OFPTT_ALL
;
1836 char *error
= str_to_u8(table_id
, "table_id", &tm
->table_id
);
1842 if (strcmp(flow_miss_handling
, "controller") == 0) {
1843 tm
->config
= OFPTC11_TABLE_MISS_CONTROLLER
;
1844 } else if (strcmp(flow_miss_handling
, "continue") == 0) {
1845 tm
->config
= OFPTC11_TABLE_MISS_CONTINUE
;
1846 } else if (strcmp(flow_miss_handling
, "drop") == 0) {
1847 tm
->config
= OFPTC11_TABLE_MISS_DROP
;
1849 return xasprintf("invalid flow_miss_handling %s", flow_miss_handling
);
1852 if (tm
->table_id
== 0xfe && tm
->config
== OFPTC11_TABLE_MISS_CONTINUE
) {
1853 return xstrdup("last table's flow miss handling can not be continue");
1860 /* Opens file 'file_name' and reads each line as a flow_mod of the specified
1861 * type (one of OFPFC_*). Stores each flow_mod in '*fm', an array allocated
1862 * on the caller's behalf, and the number of flow_mods in '*n_fms'.
1864 * Returns NULL if successful, otherwise a malloc()'d string describing the
1865 * error. The caller is responsible for freeing the returned string. */
1866 char * WARN_UNUSED_RESULT
1867 parse_ofp_flow_mod_file(const char *file_name
, uint16_t command
,
1868 struct ofputil_flow_mod
**fms
, size_t *n_fms
,
1869 enum ofputil_protocol
*usable_protocols
)
1871 size_t allocated_fms
;
1876 *usable_protocols
= OFPUTIL_P_ANY
;
1881 stream
= !strcmp(file_name
, "-") ? stdin
: fopen(file_name
, "r");
1882 if (stream
== NULL
) {
1883 return xasprintf("%s: open failed (%s)",
1884 file_name
, ovs_strerror(errno
));
1887 allocated_fms
= *n_fms
;
1890 while (!ds_get_preprocessed_line(&s
, stream
, &line_number
)) {
1892 enum ofputil_protocol usable
;
1894 if (*n_fms
>= allocated_fms
) {
1895 *fms
= x2nrealloc(*fms
, &allocated_fms
, sizeof **fms
);
1897 error
= parse_ofp_flow_mod_str(&(*fms
)[*n_fms
], ds_cstr(&s
), command
,
1902 for (i
= 0; i
< *n_fms
; i
++) {
1903 free((*fms
)[i
].ofpacts
);
1910 if (stream
!= stdin
) {
1914 return xasprintf("%s:%d: %s", file_name
, line_number
, error
);
1916 *usable_protocols
&= usable
; /* Each line can narrow the set. */
1921 if (stream
!= stdin
) {
1927 char * WARN_UNUSED_RESULT
1928 parse_ofp_flow_stats_request_str(struct ofputil_flow_stats_request
*fsr
,
1929 bool aggregate
, const char *string
,
1930 enum ofputil_protocol
*usable_protocols
)
1932 struct ofputil_flow_mod fm
;
1935 error
= parse_ofp_str(&fm
, -1, string
, usable_protocols
);
1940 /* Special table ID support not required for stats requests. */
1941 if (*usable_protocols
& OFPUTIL_P_OF10_STD_TID
) {
1942 *usable_protocols
|= OFPUTIL_P_OF10_STD
;
1944 if (*usable_protocols
& OFPUTIL_P_OF10_NXM_TID
) {
1945 *usable_protocols
|= OFPUTIL_P_OF10_NXM
;
1948 fsr
->aggregate
= aggregate
;
1949 fsr
->cookie
= fm
.cookie
;
1950 fsr
->cookie_mask
= fm
.cookie_mask
;
1951 fsr
->match
= fm
.match
;
1952 fsr
->out_port
= fm
.out_port
;
1953 fsr
->out_group
= fm
.out_group
;
1954 fsr
->table_id
= fm
.table_id
;
1958 /* Parses a specification of a flow from 's' into 'flow'. 's' must take the
1959 * form FIELD=VALUE[,FIELD=VALUE]... where each FIELD is the name of a
1960 * mf_field. Fields must be specified in a natural order for satisfying
1961 * prerequisites. If 'mask' is specified, fills the mask field for each of the
1962 * field specified in flow. If the map, 'names_portno' is specfied, converts
1963 * the in_port name into port no while setting the 'flow'.
1965 * Returns NULL on success, otherwise a malloc()'d string that explains the
1968 parse_ofp_exact_flow(struct flow
*flow
, struct flow
*mask
, const char *s
,
1969 const struct simap
*portno_names
)
1971 char *pos
, *key
, *value_s
;
1975 memset(flow
, 0, sizeof *flow
);
1977 memset(mask
, 0, sizeof *mask
);
1980 pos
= copy
= xstrdup(s
);
1981 while (ofputil_parse_key_value(&pos
, &key
, &value_s
)) {
1982 const struct protocol
*p
;
1983 if (parse_protocol(key
, &p
)) {
1984 if (flow
->dl_type
) {
1985 error
= xasprintf("%s: Ethernet type set multiple times", s
);
1988 flow
->dl_type
= htons(p
->dl_type
);
1990 mask
->dl_type
= OVS_BE16_MAX
;
1994 if (flow
->nw_proto
) {
1995 error
= xasprintf("%s: network protocol set "
1996 "multiple times", s
);
1999 flow
->nw_proto
= p
->nw_proto
;
2001 mask
->nw_proto
= UINT8_MAX
;
2005 const struct mf_field
*mf
;
2006 union mf_value value
;
2009 mf
= mf_from_name(key
);
2011 error
= xasprintf("%s: unknown field %s", s
, key
);
2015 if (!mf_are_prereqs_ok(mf
, flow
)) {
2016 error
= xasprintf("%s: prerequisites not met for setting %s",
2021 if (!mf_is_zero(mf
, flow
)) {
2022 error
= xasprintf("%s: field %s set multiple times", s
, key
);
2026 if (!strcmp(key
, "in_port")
2028 && simap_contains(portno_names
, value_s
)) {
2029 flow
->in_port
.ofp_port
= u16_to_ofp(
2030 simap_get(portno_names
, value_s
));
2032 mask
->in_port
.ofp_port
= u16_to_ofp(ntohs(OVS_BE16_MAX
));
2035 field_error
= mf_parse_value(mf
, value_s
, &value
);
2037 error
= xasprintf("%s: bad value for %s (%s)",
2038 s
, key
, field_error
);
2043 mf_set_flow_value(mf
, &value
, flow
);
2045 mf_mask_field(mf
, mask
);
2051 if (!flow
->in_port
.ofp_port
) {
2052 flow
->in_port
.ofp_port
= OFPP_NONE
;
2059 memset(flow
, 0, sizeof *flow
);
2061 memset(mask
, 0, sizeof *mask
);
2067 static char * WARN_UNUSED_RESULT
2068 parse_bucket_str(struct ofputil_bucket
*bucket
, char *str_
,
2069 enum ofputil_protocol
*usable_protocols
)
2071 struct ofpbuf ofpacts
;
2072 char *pos
, *act
, *arg
;
2076 bucket
->watch_port
= OFPP_ANY
;
2077 bucket
->watch_group
= OFPG11_ANY
;
2081 ofpbuf_init(&ofpacts
, 64);
2082 while (ofputil_parse_key_value(&pos
, &act
, &arg
)) {
2085 if (!strcasecmp(act
, "weight")) {
2086 error
= str_to_u16(arg
, "weight", &bucket
->weight
);
2087 } else if (!strcasecmp(act
, "watch_port")) {
2088 if (!ofputil_port_from_string(arg
, &bucket
->watch_port
)
2089 || (ofp_to_u16(bucket
->watch_port
) >= ofp_to_u16(OFPP_MAX
)
2090 && bucket
->watch_port
!= OFPP_ANY
)) {
2091 error
= xasprintf("%s: invalid watch_port", arg
);
2093 } else if (!strcasecmp(act
, "watch_group")) {
2094 error
= str_to_u32(arg
, &bucket
->watch_group
);
2095 if (!error
&& bucket
->watch_group
> OFPG_MAX
) {
2096 error
= xasprintf("invalid watch_group id %"PRIu32
,
2097 bucket
->watch_group
);
2100 error
= str_to_ofpact__(pos
, act
, arg
, &ofpacts
, n_actions
,
2106 ofpbuf_uninit(&ofpacts
);
2111 ofpact_pad(&ofpacts
);
2112 bucket
->ofpacts
= ofpacts
.data
;
2113 bucket
->ofpacts_len
= ofpacts
.size
;
2118 static char * WARN_UNUSED_RESULT
2119 parse_ofp_group_mod_str__(struct ofputil_group_mod
*gm
, uint16_t command
,
2121 enum ofputil_protocol
*usable_protocols
)
2124 F_GROUP_TYPE
= 1 << 0,
2127 char *save_ptr
= NULL
;
2128 bool had_type
= false;
2130 struct ofputil_bucket
*bucket
;
2133 *usable_protocols
= OFPUTIL_P_OF11_UP
;
2137 fields
= F_GROUP_TYPE
| F_BUCKETS
;
2140 case OFPGC11_DELETE
:
2144 case OFPGC11_MODIFY
:
2145 fields
= F_GROUP_TYPE
| F_BUCKETS
;
2152 memset(gm
, 0, sizeof *gm
);
2153 gm
->command
= command
;
2154 gm
->group_id
= OFPG_ANY
;
2155 list_init(&gm
->buckets
);
2156 if (command
== OFPGC11_DELETE
&& string
[0] == '\0') {
2157 gm
->group_id
= OFPG_ALL
;
2161 *usable_protocols
= OFPUTIL_P_OF11_UP
;
2163 if (fields
& F_BUCKETS
) {
2164 char *bkt_str
= strstr(string
, "bucket");
2173 bkt_str
= strchr(bkt_str
+ 1, '=');
2175 error
= xstrdup("must specify bucket content");
2180 next_bkt_str
= strstr(bkt_str
, "bucket");
2182 *next_bkt_str
= '\0';
2185 bucket
= xzalloc(sizeof(struct ofputil_bucket
));
2186 error
= parse_bucket_str(bucket
, bkt_str
, usable_protocols
);
2191 list_push_back(&gm
->buckets
, &bucket
->list_node
);
2193 bkt_str
= next_bkt_str
;
2197 for (name
= strtok_r(string
, "=, \t\r\n", &save_ptr
); name
;
2198 name
= strtok_r(NULL
, "=, \t\r\n", &save_ptr
)) {
2201 value
= strtok_r(NULL
, ", \t\r\n", &save_ptr
);
2203 error
= xasprintf("field %s missing value", name
);
2207 if (!strcmp(name
, "group_id")) {
2208 if(!strcmp(value
, "all")) {
2209 gm
->group_id
= OFPG_ALL
;
2211 char *error
= str_to_u32(value
, &gm
->group_id
);
2215 if (gm
->group_id
!= OFPG_ALL
&& gm
->group_id
> OFPG_MAX
) {
2216 error
= xasprintf("invalid group id %"PRIu32
,
2221 } else if (!strcmp(name
, "type")){
2222 if (!(fields
& F_GROUP_TYPE
)) {
2223 error
= xstrdup("type is not needed");
2226 if (!strcmp(value
, "all")) {
2227 gm
->type
= OFPGT11_ALL
;
2228 } else if (!strcmp(value
, "select")) {
2229 gm
->type
= OFPGT11_SELECT
;
2230 } else if (!strcmp(value
, "indirect")) {
2231 gm
->type
= OFPGT11_INDIRECT
;
2232 } else if (!strcmp(value
, "ff") ||
2233 !strcmp(value
, "fast_failover")) {
2234 gm
->type
= OFPGT11_FF
;
2236 error
= xasprintf("invalid group type %s", value
);
2240 } else if (!strcmp(name
, "bucket")) {
2241 error
= xstrdup("bucket is not needed");
2244 error
= xasprintf("unknown keyword %s", name
);
2248 if (gm
->group_id
== OFPG_ANY
) {
2249 error
= xstrdup("must specify a group_id");
2252 if (fields
& F_GROUP_TYPE
&& !had_type
) {
2253 error
= xstrdup("must specify a type");
2257 /* Validate buckets. */
2258 LIST_FOR_EACH (bucket
, list_node
, &gm
->buckets
) {
2259 if (bucket
->weight
!= 1 && gm
->type
!= OFPGT11_SELECT
) {
2260 error
= xstrdup("Only select groups can have bucket weights.");
2264 if (gm
->type
== OFPGT11_INDIRECT
&& !list_is_short(&gm
->buckets
)) {
2265 error
= xstrdup("Indirect groups can have at most one bucket.");
2271 ofputil_bucket_list_destroy(&gm
->buckets
);
2275 char * WARN_UNUSED_RESULT
2276 parse_ofp_group_mod_str(struct ofputil_group_mod
*gm
, uint16_t command
,
2278 enum ofputil_protocol
*usable_protocols
)
2280 char *string
= xstrdup(str_
);
2281 char *error
= parse_ofp_group_mod_str__(gm
, command
, string
,
2286 ofputil_bucket_list_destroy(&gm
->buckets
);
2291 char * WARN_UNUSED_RESULT
2292 parse_ofp_group_mod_file(const char *file_name
, uint16_t command
,
2293 struct ofputil_group_mod
**gms
, size_t *n_gms
,
2294 enum ofputil_protocol
*usable_protocols
)
2296 size_t allocated_gms
;
2304 stream
= !strcmp(file_name
, "-") ? stdin
: fopen(file_name
, "r");
2305 if (stream
== NULL
) {
2306 return xasprintf("%s: open failed (%s)",
2307 file_name
, ovs_strerror(errno
));
2310 allocated_gms
= *n_gms
;
2313 *usable_protocols
= OFPUTIL_P_OF11_UP
;
2314 while (!ds_get_preprocessed_line(&s
, stream
, &line_number
)) {
2315 enum ofputil_protocol usable
;
2318 if (*n_gms
>= allocated_gms
) {
2321 *gms
= x2nrealloc(*gms
, &allocated_gms
, sizeof **gms
);
2322 for (i
= 0; i
< *n_gms
; i
++) {
2323 list_moved(&(*gms
)[i
].buckets
);
2326 error
= parse_ofp_group_mod_str(&(*gms
)[*n_gms
], command
, ds_cstr(&s
),
2331 for (i
= 0; i
< *n_gms
; i
++) {
2332 ofputil_bucket_list_destroy(&(*gms
)[i
].buckets
);
2339 if (stream
!= stdin
) {
2343 return xasprintf("%s:%d: %s", file_name
, line_number
, error
);
2345 *usable_protocols
&= usable
;
2350 if (stream
!= stdin
) {